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sue39 sue39
  • 09-05-2016
  • Geography
Answered

why do they pressurize the cabin of airplane at 7,000 ft

Verified Answer :

Insidious
Insidious Insidious
  • 09-05-2016

Hey there! 

Airplanes must be pressurized when flying at high altitudes so that the oxygen levels stay normal for us to breathe. The higher you go up, the thinner the air gets, which causes breathing problems for us humans. 

Thank you!

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